Cytiva® Qualitative Filter Paper, Grade 520A1/2, Folded (Prepleated), 450mm, 100 per pack

A thin paper with great wet strength and a very high flow rate. Frequently used in technical applications such as the filtration of viscous liquids and emulsions (e.g., sweetened juices, spirits and syrups, resin solutions, oils, or plant extracts).

• Savings in time required to quadrant-fold circles to fit conical filter funnels in repetitive or multiple analyses.
• Decreased overall filtration time because of the extra surface area exposed; the normal slow down of filtration speed due to the loading of particulate is postponed.
• Increased total loading capacity as more filter area is available.
• Maintained flow rate due to the reduction in filter paper contact with funnel side and the self-supporting shape of the filter itself.
• The prepleating does not significantly affect any of the technical data, and the same figures may be used for the flat circles.

Time-saving Whatman qualitative grades are offered in this convenient form, which gives major advantages over flat circles.

Specifications:

• Alpha Cellulose Content Min.: 98%
• Application: Frequently used in technical applications such as the filtration of viscous liquids and emulsions.
• Basis Weight: 90 g/m²
• Filtration Speed (Herzberg): Approx. 17.5 s
• Grade: Grade 520 a ½
• Grade Type: Folded (Prepleated)
• Material: Cellulose
• Particle Retention in Liquid Max.: 18 µm
• Properties: Very fast, creped, high wet strength
• Typical Thickness: 300 µm
• Diameter: 450 mm